The website is written with Jekyll markdown.
For small changes, you can use the edit button at the top right of each page.
For larger changes, you can run:
$ ./gradlew :beam-website:serveWebsite
Which will start a docker container and serve the website to http://localhost:4000. Ater one hour, the docker container will exit and you will need to re-start it.
You can also check links with:
$ ./gradlew :beam-website:testWebsite